MPA Electrical NM55326 Brake Master Cylinder

Brake Master Cylinder for Nissan Front Disc Brake Applications

Restore consistent brake pedal response with this MPA Electrical brake master cylinder, part number NM55326. It is a standard replacement unit for select Nissan Pathfinder, Frontier, and Xterra models with front disc brakes, built with an aluminum body, plastic reservoir, and DOT 3 fluid compatibility.

MPA Electrical’s New with front disc brakes product line focuses on direct-fit brake hydraulics for vehicles that need dependable OE-style replacement parts. This NM55326 master cylinder is tested against OE specifications using sample-based validation and controlled inspection processes to help deliver consistent braking performance after installation.

Key Features

• Brake master cylinder for brake hydraulic repair
• Fits 2005-2009 Nissan Pathfinder, N/A, New with front disc brakes
• Fits 2005-2008 Nissan Frontier, N/A, New with front disc brakes
• Fits 2005-2007 Nissan Xterra, N/A, New with front disc brakes
• Aluminum master cylinder body with plastic reservoir
• 1 in. bore diameter for the specified application
• Reservoir included with cap and gasket/seal included
• Standard replacement grade with DOT 3 fluid type
• Two mounting holes; mounting hardware not included

Detailed Description

The MPA Electrical NM55326 brake master cylinder is engineered for Nissan brake system service where the original master cylinder has worn, leaked, or lost hydraulic pressure. It is built with a 1-inch bore, aluminum construction, and an included reservoir to support proper brake fluid delivery in 2005-2009 Nissan Pathfinder, 2005-2008 Nissan Frontier, and 2005-2007 Nissan Xterra models with front disc brakes. This part number, NM55326, is a direct replacement choice for drivers addressing brake pedal travel or hydraulic performance concerns on these Nissan applications.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Low or sinking brake pedal feel
• Brake fluid leakage at the master cylinder
• Uneven or inconsistent hydraulic brake pressure
• Delayed brake response during normal driving
• Brake system wear related to an aging master cylinder

Installation Notes and Tips

Verify vehicle fitment by year, make, model, and front disc brake configuration before installation. Mounting hardware, brake booster, push rod, sensor, and brake pressure switch are not included. Use DOT 3 brake fluid and bleed the hydraulic system thoroughly after installation to remove air from the lines. Inspect the brake lines, reservoir connections, and sealing surfaces before final assembly.

Quality Assurance

MPA Electrical tests brake master cylinders against OE specifications using proprietary processes and strict inspection protocols to help ensure consistent braking performance out of the box. This NM55326 is a new standard replacement part built for the listed Nissan applications.